Sand-paper holder



6, 1958 T. L. FAWICK 2,848,851

sAND-PAPER HOLDER Filed Nov. 23, 1956 F 3 INVENTOR.

THOMAS L. FAWICK ATTORNEY Patented Aug. 26, 1953 ice SAND-PAPER HEBLDER Thomas Fawiclr, Cleveland, ()ho Application November 23, 1955, Serial No. 624,059

3 Claims. (Cl. 511-487) This invention relates to a sanding or sandpapering tool comprising backing means for holding a piece of sandpaper or the like with the working part of its sanded surface in a flat or in a curved shape.

Its chief objects are to provide a light, inexpensive and eifective tool for this purpose.

A more specific object is to provide a tool adapted to hold the sandpaper closely to its intended contour or flat ness, Without excessive local yielding to pressure against the object to be abraded, so that a projection of repair plaster, for example, will be abraded until it will be flush with the surrounding plaster.

A further object is to provide, in conjunction with that advantage, improved means, preferably employing the frictional characteristic of a rubber paper-contacting surface, for anchoring margins of the paper to the tool.

Another object is to provide a tool adapted for quick and easy mounting of sandpaper or the like upon it with the working portion of the paper in either a flat or a curved shape, alternatively.

Of the accompanying drawings:

Fig. 1 is an elevation of a tool embodying my invention in its preferred form, and a piece of sandpaper mounted upon it with its working portion in a fiat shape.

Fig. 2 is a plan View of the same, with parts sectioned and broken away.

Fig. 3 is a fragmentary elevation of the tool and a piece of sandpaper mounted upon it with its working portion in a curved shape.

Fig. 4 is a fragmentary elevation of the tool and sandpaper illustrating the possibility of employing the friction of the sanded face of the paper for strong anchorage of a margin of the paper.

The particular embodiment of the invention that is here shown comprises a hollow block formed of sheetmetal and adapted to be made by the bending of a fiat sheet of aluminum, for example, to the shape in which it is shown in Fig. 1, welding its ends together at 11, and completing the formation of a box-like structure by welding to the member 10 a pair of closure plates 12, 12, preferably after stamping each of them with a pair of finger-grip depressions 13, 13 and mounting in each, at a proper position, a screw-and-nut assembly or a rivet providing a grooved stud 14 to project from the outer face of the hollow tool.

The face required to be contacted, as a backing, by the sandpaper is then given a thin facing of rubber 15,

by the use of an adhesive and/ or by vulcanized adhesion.

A spring wire 16, given closed rectangular form by bending it to shape and preferably by welding its ends together at 17, Fig. 2, is adapted to be laid with its transverse end reaches upon respective margins of a piece of sandpaper 18 laid upon the tool as in Fig. 1 or Fig. 3, and then to have the middle parts of its lengthwise reaches bowed past the respective studs 14 and thus sprung into the grooves in the studs, the condition then being as clearly shown in Fig. 1 or in Fig. 3, in which it will be seen that the spring is of the cantilever type, which provides simplicity, economy, ease of manipulation and durability. The studs are so positioned that in either case the spring will be under substantially the same strain, for gripping the margins of the sandpaper against the rubber facing of the tool.

In Fig. 4 a slightly longer piece of sandpaper 19 is shown, with its end margin folded back under itself so that its surface that is pressed against the rubber facing of the tool is a sanded surface, it being assumed that the sandpaper or the like has sufficient stiffness to provide additional strength of anchorage by reason of the pressure of the sanded surface against the rubber facing by the spring.

The resilient, frictional rubber provides local anchorage of the paper throughout the latters extent and thus the grip of the spring is sufficient additional anchorage to prevent slippage, although the rubber preferably is thin enough to be not too yielding to projections on the surface to be sanded.

Modifications are possible without departure from the scope of the invention as defined in the. appended claims.

I claim:

1. A sanding tool comprising a member having a backing surface for a sheet of abrasive material, a spring, and means on said member for holding said spring with a part of the sheet gripped between it and the said member, the spring-holding means comprising studs projecting from opposite side faces of the said member and the spring being of the cantilever type and having a middle part for gripping the sheet, and side parts extending from said middle part, along respective side faces of said member, to the studs, and anchoringly engaged with the studs.

2. A tool as defined in claim 1 in which the spring is of closed rectangular form.

3. A tool as defined in claim 1 in which the defined member is formed with oppositely facing sheet-backing surfaces of different shapes and the studs are so positioned as to hold the spring in sheet-gripping relation with the sheet backed by one or the other of said surfaces alternatively.

References Cited in the file of this patent UNITED STATES PATENTS 2,070,712 Davis Feb. 16, 1937 2,199,962 Reichel May 7, 1940 2,411,615 Dodelin Nov. 26, 1946 2,428,618 Dispensiere Oct. 7, 1947 2,482,344 Kent Sept. 20, 1948 2,577,498 Applegate Dec. 4, 1951 

